2230 MPa anchoring assembly for frame structure

Abstract

The utility model discloses a 2230 MPa anchoring assembly for a frame structure, which comprises a prestressed tendon, a force application end and an embedding end, a reinforcing rib pre-embedded in a concrete structure is arranged between the force application end and the embedding end, the end part of the prestressed tendon sequentially penetrates through the embedding end, the reinforcing rib and the force application end, the embedding end comprises a second pressure bearing plate and an extrusion sleeve, and the second pressure bearing plate is fixedly connected with the second pressure bearing plate. The second bearing plate comprises a bottom plate and a step hole channel formed in the end face of the bottom plate, an extrusion sleeve is assembled in the step hole channel, and a spring coil arranged on the periphery of the prestressed tendon in a sleeving mode is arranged in the extrusion sleeve. The extrusion sleeve is simple in structure, the step hole channel is formed in the end face of the bottom plate, the extrusion sleeve is inserted into the step hole channel, in this way, the end of the extrusion sleeve can be tightly attached to the step face of the step hole channel, and therefore installation and centering positioning between the extrusion sleeve and the step hole channel are achieved; in the extrusion process of the extrusion sleeve, the spring coil is broken, so that the spring coil is uniformly distributed between the extrusion sleeve and the steel strand, and the friction force is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of anchorage technology for building frame structures, specifically a 2230MPa anchorage component for frame structures. Background Technology

[0002] With the development of industrialized construction, large prefabricated frame structures have been widely used in high-rise buildings due to their advantages such as short construction cycle, strong quality control, and flexible spatial layout. These frame structures achieve coordinated beam-column load-bearing through rigid joints, forming an overall lateral force resisting system when resisting horizontal loads. However, the performance of the structure is highly dependent on the reliability of the joint anchoring system, especially in super high-rise buildings, where the coupling effect of huge self-weight loads with dynamic wind loads and seismic loads places higher demands on the strength and deformation control of the anchoring system.

[0003] While current mainstream prestressed anchoring technology can adjust the distribution of internal forces, in practical applications, the fixed-end anchor squeezing sleeve assembly lacks precise positioning design. For example, there is no centering device between the squeezing sleeve and the load-bearing structure, and no positioning mechanism between the squeezing sleeve and the squeezing spring. This leads to poor alignment of the prestressed tendons during installation and prominent stress concentration, which seriously weakens the long-term durability of the anchoring system. Therefore, a 2230MPa anchoring assembly for frame structures is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a 2230MPa anchoring component for frame structures to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 2230MPa anchoring component for a frame structure, comprising a prestressed tendon, a force-applying end, and an embedded end. A reinforcing rib pre-embedded inside the concrete structure is provided between the force-applying end and the embedded end. The end of the prestressed tendon passes sequentially through the embedded end, the reinforcing rib, and the force-applying end. The embedded end includes a second bearing plate and an extrusion sleeve. The second bearing plate includes a base plate and a stepped channel provided on the end face of the base plate. An extrusion sleeve is assembled inside the stepped channel, and a spring ring sleeved around the periphery of the prestressed tendon is provided inside the extrusion sleeve.

[0006] As a further embodiment of this utility model: the force-applying end includes a first pressure plate connected to the end of the reinforcing rib, and an anchor ring is installed on the end face of the first pressure plate away from the reinforcing rib, and an anchor clamp is provided inside the anchor ring.

[0007] As a further embodiment of this utility model: the anchor ring is provided with a conical hole and a cylindrical hole at its center, the conical hole and the cylindrical hole are concentrically connected, and the interior of the conical hole is adapted to the anchor clamp.

[0008] As a further embodiment of this utility model: the anchor clamp is composed of three anchor plates, the outer side of the anchor plates is provided with a strip groove, and the inner side of the anchor plates is provided with helical teeth.

[0009] As a further embodiment of this utility model: the strip groove formed by the combination of three anchor plates forms an annular groove, and a linear ring is provided in the annular groove for fixing the three anchor plates after combination.

[0010] As a further embodiment of this utility model: the outer periphery of the stepped channel is provided with multiple sets of reinforcing ribs connected to the base plate, and the base plate is also symmetrically provided with positioning holes.

[0011] As a further embodiment of this utility model: the inner hole of the stepped channel is composed of a first stepped hole and a second stepped hole arranged concentrically, and a compression sleeve is installed in the second stepped hole, and the inner diameter of the first stepped hole is smaller than the outer diameter of the compression sleeve.

[0012] As a further embodiment of this utility model: the extrusion sleeve includes a sleeve body, the inner cavity of the sleeve body is composed of concentric stepped holes and through holes, the stepped holes are located on the side adjacent to the second pressure plate, and the spring ring is located inside the through hole.

[0013] As a further embodiment of this utility model: the outer diameter of the spring ring is smaller than the inner diameter of the through hole, and the outer diameter of the spring ring is larger than the inner diameter of the stepped hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This application provides a stepped channel on the end face of the base plate, into which the extrusion sleeve is inserted. In this way, the end of the extrusion sleeve can fit tightly with the stepped surface of the stepped channel, thereby achieving installation and alignment between the extrusion sleeve and the stepped channel. Furthermore, by providing a spring ring inside the extrusion sleeve, the spring ring breaks during the extrusion process, distributing the spring ring evenly between the extrusion sleeve and the steel strand, thus effectively increasing the friction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the anchoring component of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the anchor clamp of this utility model;

[0018] Figure 3 This is a schematic diagram of the anchor clamp of this utility model;

[0019] Figure 4 This is a schematic diagram of the second pressure plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the extrusion sleeve of this utility model;

[0021] In the diagram: 1. Anchor clamp; 1-1. Anchor plate; 1-2. Strip groove; 1-3. Spiral tooth; 2. Linear ring; 3. Anchor ring; 4. First bearing plate; 5. Reinforcing rib; 6. Second bearing plate; 6-1. Base plate; 6-2. Stepped channel; 6-3. Reinforcing rib; 6-4. Positioning hole; 7. Extrusion sleeve; 7-1. Stepped hole; 7-2. Through hole; 7-3. Sleeve body; 8. Spring ring; 9. Prestressed tendon. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5In this embodiment of the present invention, a 2230MPa anchoring component for a frame structure includes a prestressed tendon 9, a force-applying end, and an embedded end. A reinforcing rib 5 is embedded within the concrete structure between the force-applying end and the embedded end. The two ends of the reinforcing rib 5 are fixedly connected to the force-applying end and the embedded end, respectively. The reinforcing rib 5 has a spiral structure. By being embedded within the concrete structure, it can restrain local deformation of the concrete and improve its compressive strength. The end of the prestressed tendon 9 passes sequentially through the embedded end, the reinforcing rib 5, and the force-applying end. The embedded end includes a second bearing plate 6 and an extrusion plate. The second bearing plate 6 includes a base plate 6-1 and a stepped channel 6-2 located on the end face of the base plate 6-1. The upper and lower end faces of the base plate 6-1 are rectangular, and the whole structure is trapezoidal. Its end face area is large, and it has strong load-bearing strength in contact with concrete. The inner hole of the stepped channel 6-2 is composed of a first stepped hole and a second stepped hole arranged concentrically. The second stepped hole is fitted with an extrusion sleeve 7, and the inner diameter of the first stepped hole is smaller than the outer diameter of the extrusion sleeve 7. First, the end of the extrusion sleeve 7 is inserted into the second stepped hole in the stepped channel 6-2. In this way, the end of the extrusion sleeve 7 can fit tightly against the stepped surface of the second stepped hole, thereby achieving precise alignment and positioning between the extrusion sleeve 7 and the stepped hole 6-2. Next, after completing the positioning of the extrusion sleeve 7, the prestressing tendon 9 should pass through the following parts in sequence: first through the extrusion sleeve 7, then through the second stepped hole, and finally through the first stepped hole. In this way, not only is the installation of the prestressing tendon 9 completed, but its alignment and positioning within the structure are also ensured. The extrusion sleeve 7 is provided with a spring ring 8 sleeved around the periphery of the prestressing tendon 9. The outer diameter of the spring ring 8 is smaller than the inner diameter of the through hole 7-2. The outer diameter of the spring ring 8 is larger than the inner diameter of the stepped hole 7-1. This design allows the spring ring 8 to stop moving when it is close to the stepped hole 7-1, thus completing the pre-installation positioning. The spring ring 8 is made of a high-hardness but brittle material. During the extrusion operation of the extrusion sleeve 7, the spring ring 8 will break due to the force and be evenly distributed in the gap between the extrusion sleeve 7 and the prestressing rib 9. This process can effectively increase the friction between the extrusion sleeve 7 and the prestressing rib 9. Through the above steps, not only is the precise installation and positioning between components achieved, but the overall stability and reliability of the system are also enhanced.

[0024] Please see Figure 1 In one embodiment, preferably, the force-applying end includes a first bearing plate 4 connected to the end of the reinforcing rib 5. The first bearing plate 4 is a square steel plate with a circular through hole at its center for the prestressing tendon 9 to pass through. An anchor ring 3 is installed on the end face of the first bearing plate 4 away from the reinforcing rib 5. An anchor clamp 1 is provided inside the anchor ring 3. A conical hole and a cylindrical hole are provided at the center of the anchor ring 3. The conical hole and the cylindrical hole are concentrically connected, and the interior of the conical hole is adapted to the anchor clamp 1.

[0025] Please see Figure 2-3In one embodiment, preferably, the anchor clamp 1 is composed of three anchor plates 1-1. The outer conical surface of the small end of the anchor plate 1-1 has a transition structure. The junctions between the inner and outer transition structures of the small end of the anchor plate 1-1 and the small end face are both rounded to reduce stress concentration and improve structural stability. The outer side of the anchor plate 1-1 has a strip groove 1-2, and the inner side of the anchor plate 1-1 has helical teeth 1-3. The pitch of the helical teeth 1-3 is 1.28 mm, the opening angle is 80°, and the tooth tip has a 0.2 mm diameter rounded corner. This not only helps protect the tooth tip from stress... Damage can also increase the friction between the clamp and the object being clamped, enhancing the fixing effect. The outer periphery of the anchor clamp 1 adopts a full conical surface structure design, which allows for a more even distribution of the pressure applied to the steel strand during the tightening process. This even pressure distribution helps to increase the friction, thereby enhancing the gripping ability between the clamp and the steel strand. The outer periphery of the anchor clamp 1 maximizes the anchoring performance by adopting a full conical surface structure and the design of the base plate 6-1 and stepped channel 6-2. Combined with the surface reinforcement technology of the clamping plate, it meets the high-strength anchoring performance requirements of 2230MPa grade steel strand.

[0026] Please see Figure 1-3 In one embodiment, preferably, the strip groove 1-2 formed by the combination of the three anchor plates 1-1 forms an annular groove, and a linear ring 2 is provided in the annular groove for fixing the three anchor plates 1-1 after combination. The linear ring 2 is a spiral ring made of 0.5mm steel wire with 1.5 turns. It has elasticity and strong circumferential constraint force. The linear ring 2 is installed in the annular groove of the anchor plate 1, which can recombine the three anchor plates 1-1.

[0027] Please see Figure 4 In one embodiment, preferably, the outer periphery of the stepped channel 6-2 is provided with multiple sets of reinforcing ribs 6-3 connected to the base plate 6-1. The double symmetrical triangular reinforcement structure design effectively improves the end plate bearing strength and the overall structural strength. Each set of reinforcing ribs 6-3 is a triangular structure, connected between the base plate 6-1 and the stepped channel 6-2, and plays a role in strengthening the overall structure. The base plate 6-1 is also symmetrically provided with positioning holes 6-4.

[0028] Please see Figure 5 In one embodiment, preferably, the compression sleeve 7 includes a sleeve body 7-3, the inner cavity of which is formed by a stepped hole 7-1 and a through hole 7-2 arranged concentrically, the stepped hole 7-1 is adjacent to the side of the second pressure plate 6, and the spring ring 8 is located inside the through hole 7-2.

[0029] The working principle and usage process of this utility model are as follows: The extrusion sleeve 7 is pre-extruded using a special extrusion machine, deforming its outer diameter from 40.8mm to 35mm, thus firmly gripping the prestressing tendon 9. The spring ring 8 maximizes the friction between the extrusion sleeve 7 and the prestressing tendon 9, achieving effective anchoring. The trapezoidal bearing plate 6 and reinforcing rib 5 are installed sequentially. The extrusion sleeve 7 is inserted into the stepped channel 6-2 of the trapezoidal bearing plate 6, fitting against the stepped surface of the second stepped hole, and achieving center positioning through the stepped channel 6-2. After assembly, using wire or other fixing objects, the second bearing plate 6 is fixed to the building frame beam through the positioning hole 6-4 on the end plate of the trapezoidal bearing plate 6, achieving pre-embedded installation at the embedded end. Subsequently, the bearing plate 4 at the other end of the reinforcing rib 5 is installed, achieving pre-embedding of all embedded structures. Before tensioning construction, the linear ring 2 and anchor clamp 1 are installed sequentially. Through the self-anchoring function of the anchor clamp 1, the prestressing tendon 9 is anchored, thus establishing the anchoring system.

[0030] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A 2230MPa anchoring component for a frame structure, characterized in that, It includes a prestressing tendon (9), a force-applying end and an embedded end. A reinforcing rib (5) is provided between the force-applying end and the embedded end and is embedded in the concrete structure. The end of the prestressing tendon (9) passes through the embedded end, the reinforcing rib (5) and the force-applying end in sequence. The embedded end includes a second bearing plate (6) and an extrusion sleeve (7). The second bearing plate (6) includes a base plate (6-1) and a stepped channel (6-2) provided on the end face of the base plate (6-1). An extrusion sleeve (7) is assembled in the stepped channel (6-2). A spring ring (8) is provided in the extrusion sleeve (7) and is sleeved on the outer periphery of the prestressing tendon (9).

2. The 2230MPa anchoring assembly for the frame structure according to claim 1, characterized in that, The force-applying end includes a first pressure plate (4) connected to the end of the reinforcing rib (5). An anchor ring (3) is installed on the end face of the first pressure plate (4) away from the reinforcing rib (5). An anchor clamp (1) is provided inside the anchor ring (3).

3. The 2230MPa anchoring assembly for the frame structure according to claim 2, characterized in that, The anchor ring (3) has a conical hole and a cylindrical hole at its center. The conical hole and the cylindrical hole are concentrically connected. The interior of the conical hole is adapted to the anchor clamp (1).

4. The 2230MPa anchoring assembly for the frame structure according to claim 3, characterized in that, The anchor clamp (1) is composed of three anchor plates (1-1). The outer side of the anchor plate (1-1) is provided with a strip groove (1-2), and the inner side of the anchor plate (1-1) is provided with a spiral tooth (1-3).

5. The 2230MPa anchoring assembly for the frame structure according to claim 4, characterized in that, The strip groove (1-2) formed by the combination of three anchor plates (1-1) forms an annular groove, and a linear ring (2) is provided in the annular groove to fix the three anchor plates (1-1) after combination.

6. The 2230MPa anchoring assembly for the frame structure according to claim 1, characterized in that, The outer periphery of the stepped channel (6-2) is provided with multiple sets of reinforcing ribs (6-3) connected to the base plate (6-1), and the base plate (6-1) is also symmetrically provided with positioning holes (6-4).

7. The 2230MPa anchoring assembly for a frame structure according to claim 6, characterized in that, The inner hole of the stepped channel (6-2) is composed of a first stepped hole and a second stepped hole arranged concentrically. The second stepped hole is fitted with a compression sleeve (7), and the inner diameter of the first stepped hole is smaller than the outer diameter of the compression sleeve (7).

8. The 2230MPa anchoring assembly for a frame structure according to claim 6, characterized in that, The compression sleeve (7) includes a sleeve body (7-3), the inner cavity of which is composed of a stepped hole (7-1) and a through hole (7-2) arranged concentrically. The stepped hole (7-1) is located on the side adjacent to the second pressure plate (6), and the spring ring (8) is located inside the through hole (7-2).

9. The 2230MPa anchoring assembly for a frame structure according to claim 8, characterized in that, The outer diameter of the spring coil (8) is smaller than the inner diameter of the through hole (7-2), and the outer diameter of the spring coil (8) is larger than the inner diameter of the stepped hole (7-1).

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